NetBackup™ Snapshot Client Administrator's Guide
- Introduction
- Installation
- Policy configuration
- Notes on policies
- Configuring a policy
- Backup Selections tab options when configuring a policy
- Off-host backup configuration options
- Selecting the snapshot method
- Configuring backup scripts
- About using alternate client backup
- Configuring alternate client backup
- Policy configuration tips
- About disabling snapshots
- NAS snapshot configuration
- About NAS snapshot overview
- Dynamic data streaming for D-NAS workloads
- Prerequisites for NetBackup DNAS configuration
- Configuring dynamic data streaming with backup host pool
- Configuring a backup host pool
- Discover plugins
- Minimum supported backup host versions for different features
- Limitations and considerations
- Setting up a NAS-Data-Protection policy
- FlashBackup configuration
- Instant Recovery configuration
- About Instant Recovery capabilities
- Instant Recovery requirements
- Instant Recovery restrictions
- Giving full server privileges to the media server
- About Instant Recovery
- Configuring a policy for Instant Recovery
- About sizing the cache for Instant Recovery copy-on-write snapshots
- Instant Recovery for databases
- About storage lifecycle policies for snapshots
- Configuration of software-based snapshot methods
- Support for Cluster Volume Manager Environments (CVM)
- Configuration of snapshot methods for disk arrays
- OS-specific configuration tasks
- About IBM DS6000 and DS8000 arrays
- IBM DS6000 and DS8000 software requirements
- Preconfiguration for IBM arrays
- Configuring NetBackup to access the IBM DS6000 or DS8000 array
- Configuring the IBM array for NetBackup
- Using DSCLI commands to obtain unique IBM identifiers
- Configuring a NetBackup policy for IBM_DiskStorage_FlashCopy
- For further reference on IBM arrays
- About IBM DS4000 array
- About Hitachi SMS/WMS/AMS, USP/NSC, USP-V/VM
- Hitachi array software requirements
- Preconfiguration for Hitachi
- About communication between NetBackup and the Hitachi array
- Determining if the Hitachi command devices are visible
- About configuring the Hitachi array for NetBackup
- Obtaining the Hitachi array serial number and the unique device identifiers
- Configuring a NetBackup policy for Hitachi_ShadowImage or Hitachi_CopyOnWrite
- About HP-XP arrays
- HP-XP array software requirements
- Preconfiguration for HP-XP
- About communication between NetBackup and the HP-XP array
- Determining if the HP-XP command devices are visible
- About configuring the HP-XP array for NetBackup
- Obtaining the array serial number and unique HP-XP identifiers
- Configuring a NetBackup policy for HP_XP_BusinessCopy and HP_XP_Snapshot
- About array troubleshooting
- Notes on Media Server and Third-Party Copy methods
- Disk requirements for Media Server and Third-Party Copy methods
- Directives for Media Server and Third-Party Copy methods
- Storage units for Media Server and Third-Party Copy methods
- Preventing multiplexing on a third-party copy backup
- Raw partition backups
- Increasing the client read timeout for all clients
- Further information on off-host data mover backups
- Backup and restore procedures
- Snapshot management
- Troubleshooting
- About gathering information and checking logs
- Logging directories for UNIX platforms
- Logging folders for Windows platforms
- Customer support contact information
- Latest patches and updates
- Snapshot provider information
- Important notes on &newProductName;
- &newProductName; installation problems
- FlashBackup and status code 13
- Single file restore from a FlashBackup Instant Recovery snapshot of a file protected by Windows VSS writer fails
- Identifying and removing a left-over snapshot
- Removing a VxVM volume clone
- Alternate client restore and backup from a snapshot fails
- Restore from a snapshot fails with status 2800
- Raw Partition restore fails with the message 'FlashBackup-Windows policy restore error'
- Snapshot creation fails with error 156
- Snapshot fails with error 20
- Restore from a snapshot fails with status 133
- Backup from snapshot fails with error 50
- Backup from snapshot parent job fails with error 4213: Snapshot import failed
- Snapshot job fails and the snapshot command does not recognize the volume name
- Snapshot creation fails with error 4220
- Snapshot creation fails when the same volume is mounted on multiple mount points of the same host
- Snapshot-based backup and restore failure
- Multiple snapshot jobs fail with code 156 or 1541.
- FlashBackup policy fails, with multiple backup selections [Cache =]
- Partial backup failure with 'Snapshot encountered error 156'
- Backup of file system validation fails with error 223
- Policy validation fails if the specified CIFS share path contains a forward slash
- Policy validation fails with status code 223
- An NDMP snapshot policy for wildcard backup fails with error 4201
- Troubleshooting with bpfis log
- Limitations of using HP-UX 11.31
- While configuring a policy for snapshot operations, the NetBackup Administration Console hangs
- Accelerator enabled incremental backup of NetApp NAS volume
- Snapshot method: Auto
- Appendix A. Managing nbu_snap (Solaris)
- Appendix B. Overview of snapshot operations
- Index
snaplist command
snaplist shows the amount of client write activity that occurred during an nbu_snap snapshot. Information is displayed for all snapshots that are currently active.
Execute this command as root:
/usr/openv/netbackup/bin/driver/snaplist
Information is displayed in the following form:
id ident size cached minblk err time
9 6730 2097152 2560 0 0 05/29/03 07:52:18
device = /dev/vx/rdsk/omaha/tcp1
cache = /dev/vx/rdsk/omaha/sncache
16 7857 2097152 128 0 0 05/29/03 12:16:00
device = /dev/vx/rdsk/omaha/vol01
cache = /dev/vx/rdsk/omaha/sncache
17 7908 20971520 4224 0 0 05/29/03 12:17:38
device = /dev/vx/rdsk/omaha/vol03
cache = /dev/vx/rdsk/zetab/cacheIf no snapshots are currently active, no output is returned.
Description of output:
id | The snapshot ID. The snapoff command uses this ID to terminate the snapshot. |
ident | A unique numeric identifier of the snapshot. ident is the pid of the process that created the snapshot. |
size | The size of the client's snapshot source in 512-byte blocks. The snapshot source is the partition on which the client's file system (the file system being backed up) is mounted. Note: size is not a reliable guide to the size of the cache that is needed for the snapshot. The user write activity during the snapshot is what determines the size of the cache needed. See the cached column of this output. |
cached | The number of 512-byte blocks in the client file system that were changed by user activity while the snapshot was active. Before being changed, these blocks were copied to the cache partition. The more blocks that are cached as a result of user activity, the larger the cache partition required. However, additional overhead - which is not shown in this cached value - is required in the cache. To see the total space that is used in a particular cache partition, use the snapcachelist command. |
minblk | In the partition on which the file system is mounted, minblk shows: the lowest numbered block that is monitored for write activity while the snapshot is active. Only FlashBackup policies use minblk. |
err | An error code; 0 indicates no error. If a snapshot has encountered an error, the err is non-zero and the snapshot is inaccessible. It can be terminated using snapoff and the snapshot ID. Error codes are identified in /usr/include/sys/errno.h. Also, error messages may be found in /var/adm/messages. |
time | The time at which the snapshot was started. |
device | The raw partition containing the client's file system data to back up (snapshot source). |
cache | The raw partition used as cache by the copy-on-write snapshot process. Make sure that this partition is large enough to store all the blocks likely to be changed by user activity during the backup. To determine the total space that is used in a particular cache partition by all active snapshots, use the snapcachelist command. |
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